The beginning and ending accounts receivable balances were N20,000 and N30,000 respectively. The collection from customers during the period was N70,000. What was the total sale on account?

The beginning and ending accounts receivable balances were N20,000 and N30,000 respectively.

The collection from customers during the period was N70,000. What was the total sale on account?

The correct answer is C. N80,000

No explanation given